…ib. (#7609)

This should fix the pytype_test failure in
#7608.

Fixes the return type of `psycopg2.cursor.fetchone()` to match the psycopg2 code:

https://github.com/psycopg/psycopg2/blob/1d3a89a0bba621dc1cc9b32db6d241bd2da85ad1/psycopg/cursor_type.c#L647-L651
https://github.com/psycopg/psycopg2/blob/1d3a89a0bba621dc1cc9b32db6d241bd2da85ad1/psycopg/cursor_type.c#L748-L786

It also matches the [psycopg2 documentation](https://www.psycopg.org/docs/cursor.html?highlight=copy_from#cursor.fetchone) as well as the [DB-API](https://peps.python.org/pep-0249/#fetchone)

Unblocks PyCQA/flake8-pyi#202

* Add generic base class `DynamicData`
* Add missing `key` prop to `OptionValue` 
* Fix `MethodFault` not inheriting from `Exception`
* Fix `RetrieveOptions` default `maxObjects` type and default

…7595)

#7588)

…q classes (#7587)

This exists on builtins.function but not here.

Use a ` TypeVar` bound to a `Protocol` defining `__add__`

The signature of this method currently doesn't work quite as intended: see PyCQA/flake8-pyi#199 (comment)

Classes will [still be accepted](https://mypy-play.net/?mypy=latest&python=3.10&gist=77efe095d01edeb1a4614166f0c9cf68) as conforming to this protocol if they have more permissive signatures such as `def __exit__(self, *args: object) -> None: ...`

Closes: #7572

)

We should hopefully be getting rid of this entire subdirectory soon anyway (#7367). This will make PRs to flake8-pyi a lot easier.

It is marked as having type `datetime.datetime` but `atTime`
refers to a time of day; only the fields on `datetime.time`
are used. The [docs](https://docs.python.org/3/library/logging.handlers.html#timedrotatingfilehandler)
clearly state that it is a `time`.

Found downstream in mypy

According to the docs at https://docs.python.org/3/library/locale.html#locale.getlocale, this function may return None for either of the two items in the return sequence, which is missed in the current form.

Also adjust `locale.setlocale()`, which can accept a tuple of `(None, None)` for the second argument.

`--enable-error-code ignore-without-code` means that mypy will ignore any type: ignore comments that don't have mypy error codes. It doesn't appear to have any effect on type: ignore comments that mypy_test doesn't use (e.g. because they're pyright- or stubtest-specific).

`--strict-equality` means that mypy will raise errors if we do something silly like `if sys.version_info == "linux"`. flake8-pyi should also check this for us, but I don't see any reason not to have mypy check this as well.

Co-authored-by: Alex Waygood <[email protected]>